/*
 *Copyright 2021-2023 NERCIS
 *
 *Licensed under the Apache License, Version 2.0 (the "License");
 *you may not use this file except in compliance with the License.
 *You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 *Unless required by applicable law or agreed to in writing, software
 *distributed under the License is distributed on an "AS IS" BASIS,
 *WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *See the License for the specific language governing permissions and
 *limitations under the License.
 */

package cn.ac.nercis.pes.service.project.imported;

import cn.ac.nercis.pes.model.dto.common.Result;
import cn.ac.nercis.pes.model.dto.project.ImportConflictDTO;
import cn.ac.nercis.pes.model.standard.prepare.EvaluatorSDTO;
import cn.ac.nercis.pes.repository.dal.evaluation.EvaluatorRepository;
import cn.ac.nercis.pes.repository.model.evaluation.EvaluatorDO;
import cn.ac.nercis.pes.service.utils.CheckFieldUtils;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.stream.Collectors;

/**
 * 测评项目组成员信息导入服务
 *
 * @author zpy
 * @version 1.0.0
 */
@Slf4j
@Service
public class EvaluatorImportService {
    private final EvaluatorRepository evaluatorRepository;

    @Autowired
    public EvaluatorImportService(EvaluatorRepository evaluatorRepository) {
        this.evaluatorRepository = evaluatorRepository;
    }

    public Result<List<ImportConflictDTO>> checkEvaluatorData(@NonNull String systemId, List<EvaluatorSDTO> evaluators) {
        List<EvaluatorDO> sourceData = this.evaluatorRepository.findAllBySystemId(systemId);
        if (CollectionUtils.isEmpty(sourceData)) {
            return Result.success();
        }
        List<ImportConflictDTO> conflictData = evaluators.stream()
                .flatMap(ec -> this.checkEvaluatorData(ec, sourceData).stream())
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
        return Result.success(conflictData);
    }

    public Result<String> importEvaluatorData(@NonNull String systemId, List<EvaluatorSDTO> evaluators, Boolean cover) {
        List<EvaluatorDO> sourceData = this.evaluatorRepository.findAllBySystemId(systemId);
        Result<String> result = Result.success();
        for (EvaluatorSDTO item : evaluators) {
            result = this.importEvaluatorData(systemId, item, sourceData, cover);
            if (!result.isSuccess()) {
                break;
            }
        }
        return result;
    }

    private List<ImportConflictDTO> checkEvaluatorData(@NonNull EvaluatorSDTO importData, List<EvaluatorDO> sourceData) {
        EvaluatorDO entity = sourceData.stream()
                .filter(st -> StringUtils.equals(st.getName(), importData.getName()))
                .findFirst().orElse(null);
        if (Objects.isNull(entity)) {
            return Collections.emptyList();
        }
        return CheckFieldUtils.checkField(entity, importData);
    }

    private Result<String> importEvaluatorData(String systemId, @NonNull EvaluatorSDTO importData, List<EvaluatorDO> sourceData, Boolean cover) {
        EvaluatorDO entity = sourceData.stream()
                .filter(st -> StringUtils.equals(st.getName(), importData.getName()))
                .findFirst().orElse(null);
        if (Objects.isNull(entity)) {
            return createEvaluatorData(systemId, importData);
        } else {
            return modifyEvaluatorData(entity, importData, cover);
        }
    }

    private Result<String> createEvaluatorData(String systemId, EvaluatorSDTO importData) {
        EvaluatorDO entity = EvaluatorDO.builder()
                .systemId(systemId)
                .name(importData.getName())
                .role(importData.getRole())
                .desc(importData.getDesc())
                .passTest(importData.getPassTest())
                .build();
        entity.setCreateTime(LocalDateTime.now());
        return Optional.of(entity)
                .map(this.evaluatorRepository::save)
                .map(EvaluatorDO::getId)
                .map(Result::success)
                .orElse(Result.failed(String.format("导入%s测评项目组成员信息，创建失败", importData.getName())));
    }

    private Result<String> modifyEvaluatorData(EvaluatorDO sourceData, EvaluatorSDTO importData, Boolean cover) {
        sourceData.setRole(CheckFieldUtils.applyContent(sourceData.getRole(), importData.getRole(), cover));
        sourceData.setDesc(CheckFieldUtils.applyContent(sourceData.getDesc(), importData.getDesc(), cover));
        sourceData.setPassTest(CheckFieldUtils.applyContent(sourceData.getPassTest(), importData.getPassTest(), cover));
        sourceData.setModifyTime(LocalDateTime.now());
        return Optional.of(sourceData)
                .map(this.evaluatorRepository::save)
                .map(EvaluatorDO::getId)
                .map(Result::success)
                .orElse(Result.failed(String.format("导入%s测评项目组成员信息，修改失败", importData.getName())));
    }
}
